Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Mitchell Mark Nass, OD

Individual provider Optometrist · NPI 1609936558

Dr. Mitchell Mark Nass, OD is an Optometry in Fort Defiance, Arizona. Graduated from Pennsylvania College of Optometry in 1982, 44 years ago. Practices with The Fort Defiance Indian Hospital Board, Incorporation, a 146-clinician group and accepts Medicare assignment. Licensed in California and Florida.

Years since qualifying
44
Trained at
Pennsylvania College of Optometry
Licensed in
CA, FL
In the registry since
2006
Specialties on file
2
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

Corner Of Route N12 And N7
Fort Defiance, AZ 86504-0649
Phone: (928) 729-8000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 35433 (CA)
Optometrist Taxonomy 152W00000X · Licence OPC1771 (FL)

Record details

NPI number1609936558
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedDecember 11, 2006
Last updated in NPPESFebruary 18, 2026
Certification dateFebruary 18, 2026
Mailing addressPo Box 649, Fort Defiance, AZ 86504-0649

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOPTOMETRY
Medical schoolPENNSYLVANIA COLLEGE OF OPTOMETRY
Graduated 1982 (44 years in practice)
Group practice The Fort Defiance Indian Hospital Board, Incorporation — 146 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Fort Defiance